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CVE-2026-111123

CVE-2026-111123 · FluidSynth through 2.6.1 Out-of-Bounds Write via SoundFont Modulator Destination

This page contains facts from public vulnerability sources. Check the original advisory before updating.

FluidSynth through 2.6.1 contains an out-of-bounds write vulnerability that allows attackers to corrupt heap and stack memory by supplying unvalidated SoundFont modulator destination values. Attackers can craft an SF2 file with PMOD/IMOD destinations of 63 to 255 that, when loaded and played, write past the voice generator array and updated_gen_bit, causing memory corruption and crashes.

CVSS 6.9 · Medium · EPSS 0.2%

Published
Updated

Stack: system

Affected products and versions

  • fluidsynth

    Versions
    • ≥ 0, ≤ 2.6.1: Affected (semver)

    No fix published

  • fluidsynth Debian:12

    Versions
    • 2.3.1-2
    • 2.3.2-1
    • 2.3.3-1
    • 2.3.3-2
    • 2.3.3-2.1
    • 2.3.4-1
    • 2.3.5-1
    • 2.3.6-1
    • 2.4.0-1
    • 2.4.0-1~hurd.1
    • 2.4.0-1~hurd.2
    • 2.4.2-1
    • 2.4.3+dfsg-1
    • 2.4.3+dfsg-2
    • 2.4.3+dfsg-3
    • 2.4.3+dfsg-4
    • 2.4.3-1
    • 2.4.4+dfsg-1
    • 2.4.6+dfsg-1
    • 2.4.7+dfsg-1
    • 2.4.7+dfsg-2
    • 2.4.8+dfsg-1
    • 2.5.0+dfsg-1
    • 2.5.1+dfsg-1
    • 2.5.1+dfsg-2
    • 2.5.2+dfsg-1
    • 2.5.3+dfsg-1
    • 2.5.4+dfsg-1
    • 2.5.5+dfsg-1
    • 2.5.5+dfsg-2
    • 2.5.6+dfsg-1
    • 2.5.7+dfsg-1
    • 2.6.0+dfsg-1
    • 2.6.1+dfsg-1
    • 2.6.1+dfsg-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • fluidsynth Debian:13

    Versions
    • 2.4.4+dfsg-1
    • 2.4.4+dfsg-1+deb13u1
    • 2.4.4+dfsg-1+deb13u2
    • 2.4.4+dfsg-1+deb13u3
    • 2.4.6+dfsg-1
    • 2.4.7+dfsg-1
    • 2.4.7+dfsg-2
    • 2.4.8+dfsg-1
    • 2.5.0+dfsg-1
    • 2.5.1+dfsg-1
    • 2.5.1+dfsg-2
    • 2.5.2+dfsg-1
    • 2.5.3+dfsg-1
    • 2.5.4+dfsg-1
    • 2.5.5+dfsg-1
    • 2.5.5+dfsg-2
    • 2.5.6+dfsg-1
    • 2.5.7+dfsg-1
    • 2.6.0+dfsg-1
    • 2.6.1+dfsg-1
    • 2.6.1+dfsg-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • fluidsynth Debian:14

    Versions
    • 2.4.4+dfsg-1
    • 2.4.6+dfsg-1
    • 2.4.7+dfsg-1
    • 2.4.7+dfsg-2
    • 2.4.8+dfsg-1
    • 2.5.0+dfsg-1
    • 2.5.1+dfsg-1
    • 2.5.1+dfsg-2
    • 2.5.2+dfsg-1
    • 2.5.3+dfsg-1
    • 2.5.4+dfsg-1
    • 2.5.5+dfsg-1
    • 2.5.5+dfsg-2
    • 2.5.6+dfsg-1
    • 2.5.7+dfsg-1
    • 2.6.0+dfsg-1
    • 2.6.1+dfsg-1
    • 2.6.1+dfsg-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • fluidsynth Ubuntu:Pro:14.04:LTS

    Versions
    • 1.1.6-2
    • 1.1.6-2ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • fluidsynth Ubuntu:Pro:16.04:LTS

    Versions
    • 1.1.6-2build1
    • 1.1.6-3
    • 1.1.6-3ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • fluidsynth Ubuntu:Pro:18.04:LTS

    Versions
    • 1.1.6-4
    • 1.1.8-1
    • 1.1.8-2
    • 1.1.8-3
    • 1.1.9-1
    • 1.1.9-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • fluidsynth Ubuntu:Pro:20.04:LTS

    Versions
    • 1.1.11-4
    • 1.1.11-4ubuntu1
    • 2.1.0-1
    • 2.1.1-2
    • 2.1.1-2ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • fluidsynth Ubuntu:Pro:22.04:LTS

    Versions
    • 2.1.7-1.1
    • 2.2.4-2
    • 2.2.5-1
    • 2.2.5-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • fluidsynth Ubuntu:Pro:24.04:LTS

    Versions
    • 2.3.3-2.1
    • 2.3.4-1
    • 2.3.4-1build1
    • 2.3.4-1build2
    • 2.3.4-1build3
    • 2.3.4-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • fluidsynth Ubuntu:26.10

    Versions
    • 2.4.8+dfsg-1
    • 2.5.6+dfsg-1
    • 2.5.7+dfsg-1
    • 2.6.0+dfsg-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • fluidsynth Ubuntu:Pro:26.04:LTS

    Versions
    • 2.4.7+dfsg-2
    • 2.4.8+dfsg-1
    • 2.4.8+dfsg-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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